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2-loop QCD corrections to Bc-meson leptonic constant

Andrei I. Onishchenko·Oleg L. Veretin
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Abstract

We present results for two-loop QCD corrections to the short distance coefficient that governs leptonic decay of Bc-meson. After brief discussion of the technics of asymptotic threshold expansion used to perform this calculation, we give comments on the numerical value of two-loop corrections and its impact on NRQCD description of Bc-meson bound state dynamics.

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Andrei I. Onishchenko, Oleg L. Veretin. 2007-01-22. 2-loop QCD corrections to Bc-meson leptonic constant. https://doi.org/10.1140/epjc%2Fs10052-007-0255-1

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